FNUS73 KGRR 311213 FWSGRR FIRE WEATHER PLANNING FORECAST FOR GILBERT LAKE RX...USDA FOREST SERVICE NATIONAL WEATHER SERVICE GRAND RAPIDS MI 813 AM EDT FRI JUL 31 2009 FORECAST IS BASED ON IGNITION TIME OF 1430 EDT ON JULY 31. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN AREA OF HIGH PRESSURE WILL MOVE ACROSS THE STATE DURING THE DAY TODAY. THIS WILL BRING SUNSHINE AND MILD TEMPERATURES REACHING THE MID 70S. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). PATCHY DENSE FOG EARLY IN THE MORNING. TEMPERATURE.........74 AT IGNITION...MAX 76. RH..................55 PERCENT AT IGNITION...MIN 50 PERCENT. WIND (20 FT)........WINDS WEST AT 13 MPH AT IGNITION...OTHERWISE SOUTHWEST WINDS 7 TO 12 MPH. MIXING WINDS........WEST 9 TO 13 MPH. MIXING HEIGHT.......1500-2000 FT AGL INCREASING TO 6600 FT AGL AT IGNITION...OTHERWISE 6100-6600 FT AGL...THEN DECREASING TO 4300 FT AGL IN THE EVENING. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 4. SMOKE DISPERSAL.....100-500 (POOR TO GOOD) INCREASING TO 500-800 (GOOD TO EXCELLENT). .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). TEMPERATURE.........MIN 54. RH..................MAX 96 PERCENT. WIND (20 FT)........SOUTH WINDS 11 TO 16 MPH. MIXING WINDS........SOUTH 7 TO 10 MPH. .SATURDAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF RAIN SHOWERS FROM LATE MORNING THROUGH EARLY AFTERNOON. RAIN SHOWERS LIKELY AND SCATTERED THUNDERSTORMS IN THE AFTERNOON. TEMPERATURE.........MAX 74. RH..................MIN 59 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 10 TO 15 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING WINDS........SOUTH 14 TO 20 MPH INCREASING TO SOUTHWEST 26 TO 32 MPH FROM LATE MORNING THROUGH EARLY AFTERNOON...THEN INCREASING TO 29 TO 38 MPH DECREASING TO 20 TO 24 MPH LATE IN THE DAY. $$ FORECASTER...LAURENS REQUESTED BY...STEVE HATTING TYPE OF REQUEST...PRESCRIBED .TAG 20090731.GILBE.01/GRR